windows 如何在 C# 中获取给定服务的子进程列表？
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How can I get a list of child processes for a given service in C#?
提问by Bardsley
I have a service which creates a number of child processes. Using c# I need to determine the number of these child processes which are currently running.
我有一个创建多个子进程的服务。使用 c# 我需要确定当前正在运行的这些子进程的数量。
For example I have a service running called "TheService". This spawns 5 child processes, all called "process.exe". Is it possible to determine the number of child processes running under the service? Essentially I need to know the number of instances of "process.exe" given only the name of the service/service process name.
例如，我有一个名为“TheService”的服务正在运行。这会产生 5 个子进程，都称为“process.exe”。是否可以确定在该服务下运行的子进程数？本质上，我只需要知道服务/服务进程名称的名称，就需要知道“process.exe”的实例数。
回答by Richard
You need to use WMI, the Win32_Processclass includes the parent process id. So a WQL query (see System.Management namespace for WMI under .NET) like:
您需要使用 WMI，Win32_Process类包含父进程 ID。因此，WQL 查询（请参阅 .NET 下 WMI 的 System.Management 命名空间）如下所示：
SELECT * FROM Win32_Process Where ParentProcessId = n
replacing nwith the service's process id.
将n替换为服务的进程 ID。
EDIT Sample code (based on code by Arsen Zahray):
编辑示例代码（基于Arsen Zahray 的代码）：
static List<Process> GetChildProcesses(int parentId) {
var query = "Select * From Win32_Process Where ParentProcessId = "
+ parentId;
ManagementObjectSearcher searcher = new ManagementObjectSearcher(query);
ManagementObjectCollection processList = searcher.Get();
var result = processList.Cast<ManagementObject>().Select(p =>
Process.GetProcessById(Convert.ToInt32(p.GetPropertyValue("ProcessId")));
).ToList();
return result;
}
回答by J?rn Schou-Rode
I am not sure exactly what you mean by "the name of the service" - would that be process.exe?
我不确定您所说的“服务名称”究竟是什么意思 - 那是 process.exe 吗？
If so, the static method Process.GetProcessesByName()should do the trick:
如果是这样，静态方法Process.GetProcessesByName()应该可以解决问题：
Process[] procs = Process.GetProcessesByName("process");
Console.WriteLine(procs.Length);
Let me know if I misunderstood your question.
如果我误解了您的问题，请告诉我。
